UAS OSC Volume 2

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Operator ID:

 

UAS Operating Safety Case
Volume 2 - UAS Description:

 

Document reference number:

 

Document version and date:

 


Amendment record

Amendment Number

Date

Amended by

Details of changes

 

 

 

 

CAP722A Table 6


Aircraft and systems description

UAS Model

FPV

UAS design & manufaturing organisations

DJI

UAS physical characteristics

Empty Mass

Maximum Take-Off Mass (MTOM)

Takeoff Weight:
Approx. 795 g

Dimensions for Rotorcraft / Multirotor

Length of aircraft body

Dimensions:
255 x 312 x 127 mm (with propellers)
178 x 232 x 127 mm (without propellers)

Diagonal Distance:
245 mm

Width of aircraft body

Height of aircraft body

Propeller Configuration

Propeller Dimensions

Sound power level

Any other relevant information

CAP722A Table 7

UAS performance characteristics

Maximum airspeed

Max Speed (near sea level, no wind):
140 kph; M mode: 39 m/s (27 m/s in Mainland China)
S mode: 27 m/s
N mode: 15 m/s

Minimum airspeed to maintain safe flight

Normal/typical operating height

Maximum operating height

Max Service Ceiling Above Sea Level:
6,000 m

Maximum flight time during normal operation

Max Flight Time:
Approx. 20 mins (measured while flying at 40 kph in windless conditions)

Maximum flight time on an ISA day at cruising speed at normal/typical operating height.

Maximum flight range on an ISA day (normal and emergency conditions)

Max Flight Distance:
16.8 km (measured while flying in windless conditions)

Glide distances

Maximum radio range of the C2 Link

Transmission Range [2]:
10 km (FCC), 6 km (CE), 6 km (SRRC), 6 km (MIC)

Max. Transmission Distance:
10 km (FCC), 6 km (CE), 6 km (SRRC), 6 km (MIC)

Max Transmission Distance (unobstructed, free of interference):
10 km (FCC), 6 km (CE/SRRC/MIC)

CAP722A Table 8

UAS environmental limitations

Wind speed limits

Max Wind Speed Resistance:
39-49 kph (25-31 mph)

Turbulence restrictions

Precipitation limits

OAT limits

Operating Temperature:
-10 Deg. to 40 Deg. C (14 Deg. to 104 Deg. F)

In-flight icing condition limits

Any other relevant information

CAP722A Table 9

Construction

Type of material

Material characteristics or properties

Any other relevant information

CAP722A Table 10

Electrical power system

Batteries:

Battery type, model and manufacturer

Battery Type:
LiPo 6S

Battery Capacity:
2000 mAh

Quantity

Arrangement

Generator:

Generator type, model and manufacturer

Specification

Electrical loads

Voltage:
22.2 V

Energy:
44.4 Wh@0.5C

Electrical load shedding functionality

Discharge Rate:
Standard: 10C

Power supply redundancy

Procedures to charge and discharge batteries.

Safety provisions with regards to hazards inherent to high-voltage storage devices:

Procedures in place for safe handling by any person who may come into contact with high-voltage storage devices

Means of identifying high-voltage storage

Safety provisions for any person discovering the UA following an accident.

Procedures and safety provisions to mitigate the risk of battery thermal runaway.

Procedures for monitoring high-voltage storage devices.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

Charging Temperature:
5 Deg. to 40 Deg. C (41 Deg. to 104 Deg. F)

CAP722A Table 11

Propulsion system

Propulsion type

Engines:

Type, model and manufacturer

Propeller type, model and manufacturer

Quantity

Arrangement

Power output

Propeller guards

In-flight restart functionality

Performance monitoring

Health monitoring

Safety features and redundancy in the system that allow maintaining flight after a failure or degradation has occurred in the propulsion system.

Fuel-powered propulsion system – Safety features to mitigate the risk of engine loss when the following hazards occur:

Fuel starvation

Fuel contamination

Failed signal input from the control station

Engine controller failure

Indication to the remote pilot

Electric-powered propulsion system:

Power source and supply management with regards to other systems in the UA

Redundant power sources

Maximum continuous power output of the motor

Maximum peak power output of the motor

Electrical distribution architecture

Electrical load shedding functionality

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 12

Fuel system

Fuel type

Safety provisions with regards to hazardous substances within the fuel system:

List of hazardous substances and their characteristics.

Procedures in place for safe handling of the UA by any person who may come into contact with the hazardous substances.

Means of identifying the hazardous substances.

Safety provisions for any person discovering the UA following an accident.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 13

Flight Controls system

Design and operation of flight control units, surfaces, actuators, control linkages, etc.

Flight controller:

Type, model and manufacturer

Model:
FC7BMC

Functions

Flight modes available

Automatic functions:

Take-off and landing

Stabilisation

Autopilot

Return to home

If functions are provided by COTS equipment, provide type, model and manufacturer.

Safety features and redundancy in the system which allow maintaining flight after a failure or degradation of the flight control system, including indication to the remote pilot.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 14

Navigation

Sensors

Type, model and manufacturer

GNSS:
GPS+GLONASS+GALILEO

Quantity

Telemetry links

Method to determine current position.

Method to navigate to intended destination.

Automatic/automated navigation functions

Geo-awareness functions

Containment functions

Safety features and redundancy in the system which allow maintaining flight after a failure or degradation has occurred in the navigation system:

Backup means of navigation

Detection of and response to loss of primary means and secondary means of navigation.

Indication to the remote pilot

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 15

Detect and Avoid (DAA) systems

DAA system functions

Forward:
Precision Measurement Range: 0.5-18 m
Obstacle Sensing: Available in N mode only
FOV: 56 Deg. (horizontal), 71 Deg. (vertical)

Downward:
ToF Effective Sensing Height: 10 m
Hovering Range: 0.5-15 m
Vision Sensor Hovering Range: 0.5-30 m

Operating Environment:
Refers to non-reflective, discernible surfaces
Diffuse reflectivity >20% (e.g. walls, trees, people)
Adequate lighting conditions (lux >15 in normal indoor lighting conditions)

Devices used

Technology used

Interface between the DAA system and the flight control computer

Limitations of the DAA system

Evidence of equipment qualification and approval.

DAA event sequence:

Level of automation

Actions required by the remote pilot

Means to verify normal system operation.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 16

Other avionics systems

 

Command Unit (CU)

Power sources, supply management and redundancy.

Radio signal:

Determination of the signal strength and health value.

Threshold values which represent a critically degraded signal.

Control handover between two CUs

Safety features to mitigate the risk of inadvertent command activation:

List of critical commands

Mitigation means

Safety features to mitigate the risk of display or HMI lock-up.

Safety features to maintain flight-critical processing when multiple programs are running concurrently.

HMI:

Information indicated to the remote pilot.

Radio signal strength and/or health indication to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

Battery Life:
Approx. 9 hours

Weight:
346 g

Battery Life:
300 minutes

Operating Temperature Range:
-10 Deg. to 40 Deg. C (14 Deg. to 104 Deg. F)

CAP722A Table 17

Command an Control (C2) link

RLOS

BRLOS

Antennas:

Type, model and manufacturer

Number of Antennas:
Four

Locations on the UAS

Transceivers / Modems:

Power levels

Transmitter Power (EIRP):
2.400-2.4835 GHz
FCC: <= 31.5dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 Ghz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 25.5 dBm

Transmitter Power (EIRP):
2.400-2.4835 GHz
FCC: <= 28.5 dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 GHz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 19 dBm

Transmitter Power (EIRP):
2.400-2.4835 GHz
FCC: <= 28.5 dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 GHz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 19 dBm

Transmitter Power (EIRP):
2.4 GHz: <=28.5 dBm (FCC), <=20 dBm (CE/ SRRC/MIC)
5.8 GHz: <=31.5 dBm (FCC), <=19 dBm (SRRC), <=14 dBm (CE)

Transmission schemes

Operating frequencies

Details of frequency spectrum approvals

Operating Frequency:
2.400-2.4835 GHz
5.725-5.850 GHz

Operating Frequency Range:
2.400-2.4835 GHz; 5.725-5.850 GHz

Maximum power output/range

Type of signal processing

Datalink margin in terms of the overall link bandwidth at the maximum anticipated distance from the CU.

Operational C2 link management:

Frequency switchovers

Contingency situations

Third party link service provider

Radio signal:

Determination of the signal strength and health value

Threshold values which represent a critically degraded signal.

Minimum and average assured data rates

Minimum and average assured latencies

Design features and procedures to maintain availability, continuity, and integrity of the datalink:

RF or other interference

Flight beyond communications range

Antenna masking

Loss of CU functionality

Loss of UA functionality

Atmospheric attenuation

Safety features to mitigate the risk of loss of C2 link:

C2 links redundancy

Automatic triggering of an emergency recovery function

Automatic return to home

Safety features to mitigate the risk of harmful interference.

HMI:

Information indicated to the remote pilot.

Radio signal strength and/or health indication to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 18

Communications

Antennas:

Type, model and manufacturer

Locations on the UAS

Communication method:

VHF

GSM network

Satellite

Safety features to mitigate the loss of communication function:

Primary communication means

Secondary / back-up communication means

HMI:

Information indicated to the remote pilot.

Radio signal strength and/or health indication to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 19

Take-off and landing mechanisms

Wheels, skids, rails, launchers, etc.

If various mechanisms can be fitted:

Primary mechanism

Secondary mechanisms

Operational conditions/requirements for each mechanism.

Any other relevant information

CAP722A Table 20

Emergency recovery and safety systems

Mode of operation

Safety features which mitigate the risk of loss of control or situational awareness.

Means to verify normal system operation.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 21

External lighting

Type, model and manufacturer

Downward Auxillary Light:
Single LED

Locations on the UA

Colour

Operation

Operating modes

Purpose

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 22

Payload

Types

Mass

Interfaces with the UA:

Mechanical interface

Electrical interface

Data interface

Release mechanism

Any other interface

Procedures to install the payload onto the UA.

Effects of the payload on the UA

Sensors

Sensor:
1/2.3" CMOS
Effective pixels: 12 million

Safety features to mitigate the risk of the payload affecting the flight of the UA:

Effects on aerodynamics

Effects of electro-magnetic interference.

Effects of electrical power and / or data connection failures on the UAS.

Effects of complete detachment of the payload from the UA (either caused by a failure or through intentional lowering / dropping of the payload).

Effects of partial detachment of the payload from the UA.

Distraction of the remote pilot generated by the payload during flight.

Procedures to verify the attachment points to the UA.

Procedures to verify the UA MTOM and CG location.

Procedures to detect and mitigate any failure of the payload in flight.

Safety provisions with regards to hazards inherent to the payload

Procedures in place for safe handling of the payload.

Means of identifying hazards.

HMI:

Information indicated to the remote pilot.

Alert messages indicated to the remote pilot.

Any other relevant information

CAP722A Table 23

Ground support equipment

UAS launch and recovery systems

Power sources

Transportation equipment

Backup or emergency equipment

Procedures to transport UA, CU, battery/fuel, and other equipment between operation sites and from the loading/off-loading area to the take-off/landing area.

Storage of ground support equipment.

Suitability of the ground support equipment and transportation method with regards to the UAS components’ fragility, sensitivity or inherent hazards.

Ground support equipment standards

Ground support equipment manufacturer's recommendations.

Any other relevant information

CAP722A Table 24

Maintenance

Maintenance manual:

Structure

Maintenance procedures:

Inspections

Overhaul

Repairs

Assurance of repair procedures

Batteries maintenance during storage periods

Origin of each procedure

Maintenance schedules

Procedures to record maintenance that has been carried out.

Storage of maintenance records

Staff qualification and levels of approval.

Procedures to use the manual by the Maintenance staff

Configuration control

Any other relevant information

CAP722A Table 25

Spare parts procurement

Sources of procurement

Process to confirm the suitability of the part.

Any other relevant information

CAP722A Table 26

Change Management and modifications to the system

Hardware, software, and firmware version control

Modification standards

Modification records storage

Safety assessment associated with the modification

Any other relevant information

CAP722A Table 27


Safety features of the UAS

Step 1 – Identify the main functions of the UAS.

 

Step 2 – Identify the sub-functions.

 

Step 3 – Consider the ways each function may fail.

 

Step 4 – Identify the failure conditions.

 

Step 5 – Select those failure conditions that may lead to mid-air collision or harm to uninvolved people on the ground. (Identified Hazard)

 

Step 6 – Assurance

 

Step 7 – Describe the consequence of the failure condition.

 

Step 8 – Describe the failure modes. (Unmitigated Failures)

 

Step 9 – Identify the single points of failure.

 

Step 10 – Describe the risk mitigation means.

 

CAP722A Table 28


ANNEX - Manufacturer supplied data forDJI FPV

Camera

Sensor1/2.3" CMOS
Effective pixels: 12 million
LensFOV: 150 Deg.
35mm Format Equivalent: 14.66 mm
Aperture: f/2.8
Focus Mode: Fixed Focus
Focus Range: 0.6 m to ∞
ISO100-12800
Shutter Speed1/50-1/8000 s
Still Photography ModesSingle shot
Max Image Size3840 x 2160
Photo FormatJPEG
Video Resolution4K: 3840 x 2160 at 50/60fps
FHD: 1920 x 1080 at 50/60/100/120fps
Video FormatsMP4/MOV (H.264/MPEG-4 AVC, H.265/HEVC)
Max Video Bitrate120 Mbps
Color ProfileStandard, D-Cinelike
RockSteady EISAvailable
Distortion CorrectionAvailable
Supported File FormatsexFAT (recommended)
FAT32

Gimbal

Mechanical RangeTilt: -65 Deg. to 70 Deg.
Controllable RangeTilt: -50 Deg. to 58 Deg.
StabilizationSingle-axis (tilt), electronic roll axis
Max Control Speed (tilt)60 Deg./s
Angular Vibration Range±0.01 Deg. (N mode)
Electronic Roll AxisAvailable (can stabilize footage when the aircraft is tilted at angles of up to 10 Deg.)

Aircraft

Takeoff WeightApprox. 795 g
Dimensions255 x 312 x 127 mm (with propellers)
178 x 232 x 127 mm (without propellers)
Diagonal Distance245 mm
Max Ascent SpeedM mode: No limit
S mode: 15 m/s
N mode: 8 m/s
Max Descent SpeedM mode: No limit
S mode: 10 m/s
N mode: 7 m/s
Max Speed (near sea level, no wind)140 kph; M mode: 39 m/s (27 m/s in Mainland China)
S mode: 27 m/s
N mode: 15 m/s
Max Acceleration0-100 kph: 2 s (in ideal conditions while flying in M mode)
Max Service Ceiling Above Sea Level6,000 m
Max Flight TimeApprox. 20 mins (measured while flying at 40 kph in windless conditions)
Max Hover Time (without wind)Approx. 16 mins (measured when flying in windless conditions)
Max Flight Distance16.8 km (measured while flying in windless conditions)
Max Wind Speed Resistance39-49 kph (25-31 mph)
Operating Temperature-10 Deg. to 40 Deg. C (14 Deg. to 104 Deg. F)
Transmitter Power (EIRP)2.400-2.4835 GHz
FCC: <= 31.5dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 Ghz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 25.5 dBm
Number of AntennasFour
GNSSGPS+GLONASS+GALILEO
Hovering Accuracy RangeVertical:
±0.1 m (with Vision Positioning)
±0.5 m (with GPS positioning)

Horizontal:
±0.3 m (with Vision Positioning)
±1.5 m (with GPS positioning)
Supported SD CardsmicroSD (up to 256 GB)
Internal StorageN/A

Sensing System

ForwardPrecision Measurement Range: 0.5-18 m
Obstacle Sensing: Available in N mode only
FOV: 56 Deg. (horizontal), 71 Deg. (vertical)
DownwardToF Effective Sensing Height: 10 m
Hovering Range: 0.5-15 m
Vision Sensor Hovering Range: 0.5-30 m
Downward Auxillary LightSingle LED
Operating EnvironmentRefers to non-reflective, discernible surfaces
Diffuse reflectivity >20% (e.g. walls, trees, people)
Adequate lighting conditions (lux >15 in normal indoor lighting conditions)

Charger

Input100-240 V, 50/60 Hz, 1.8 A
OutputBattery charging interface:
25.2 V ± 0.1 V
3.57 A ± 0.1 A (high current)
1 A ± 0.2 A (low current)

USB Port:
5V/2A ( x 2)
Rated Power86 W

Intelligent Flight Battery

Battery Capacity2000 mAh
Voltage22.2 V
Max Charging Voltage25.2 V
Battery TypeLiPo 6S
Energy44.4 Wh@0.5C
Discharge RateStandard: 10C
Weight295 g
Charging Temperature5 Deg. to 40 Deg. C (41 Deg. to 104 Deg. F)
Max Charging Power90 W

Video Transmission

Operating Frequency2.400-2.4835 GHz
5.725-5.850 GHz
Communication Bandwidth40 MHz (Max.)
Live View ModeLow-Latency Mode: 810p/120fps <= 28ms
High-Quality Mode: 810p/60fps <= 40ms
Max Video Bitrate50 Mbps
Transmission Range10 km (FCC), 6 km (CE), 6 km (SRRC), 6 km (MIC)
Audio Transmission SupportYes

DJI FPV Goggles V2

WeightApprox. 420 g (headband and antennas included)
Dimensions (L×W×H)184 x 122 x 110 mm (antennas excluded)
202 x 126 x 110 mm (antennas included)
Screen Size (single screen)2-inches ( x 2)
Screen Refresh Rate144 Hz
Communication Frequency2.400-2.4835 GHz
5.725-5.850 GHz
Transmitter Power (EIRP)2.400-2.4835 GHz
FCC: <= 28.5 dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 GHz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 19 dBm
Communication Bandwidth40 MHz (Max.)
Live View ModeLow-Latency Mode: 810p/120fps <= 28ms*
High-Quality Mode: 810p/60fps <= 40ms*
* A 150 Deg. FOV is available when shooting at 50 or 100 fps. For other frame rates, the FOV will be 142 Deg..
Max Video Bitrate50 Mbps
Transmission Range [2]10 km (FCC), 6 km (CE), 6 km (SRRC), 6 km (MIC)
Video FormatMOV(Video format: H.264)
Supported Video and Audio Playback FormatsMP4, MOV, MKV (Video format: H.264; Audio format: AAC-LC, AAC-HE, AC-3, MP3)
Operating Temperature0 Deg. to 40 Deg. C (32 Deg. to 104 Deg. F)
Power InputDedicated DJI Goggles batteries
FOVFOV: 30 Deg. to 54 Deg.; Image size: 50-100%
Interpupillary Distance Range58-70 mm
Supported microSD CardsmicroSD (up to 256 GB)

DJI FPV Goggles Battery

Capacity1800 mAh
Voltage9 V (Max.)
TypeLiPo 2S
Energy18 Wh
Charging Temperature0 Deg. to 45 Deg. C (32 Deg. to 113 Deg. F)
Max Charging Power10 W
Battery LifeApprox. 110 minutes (measured in an environment of 25 Deg.C at maximum brightness level)

DJI FPV Remote Controller 2

Operating Frequency2.400-2.4835 GHz
5.725-5.850 GHz
Transmitter Power (EIRP)2.400-2.4835 GHz
FCC: <= 28.5 dBm
CE: <= 20 dBm
SRRC: <= 20 dBm
MIC: <= 20 dBm

5.725-5.850 GHz
FCC: <= 31.5 dBm
CE: <= 14 dBm
SRRC: <= 19 dBm
Max. Transmission Distance10 km (FCC), 6 km (CE), 6 km (SRRC), 6 km (MIC)
Dimensions (L×W×H)190 x 140 x 51 mm
Weight346 g
Battery LifeApprox. 9 hours
Charging Time2.5 hours

Motion Controller

ModelFC7BMC
Weight167 g
Operating Frequency Range2.400-2.4835 GHz; 5.725-5.850 GHz
Max Transmission Distance (unobstructed, free of interference)10 km (FCC), 6 km (CE/SRRC/MIC)
Transmitter Power (EIRP)2.4 GHz: <=28.5 dBm (FCC), <=20 dBm (CE/ SRRC/MIC)
5.8 GHz: <=31.5 dBm (FCC), <=19 dBm (SRRC), <=14 dBm (CE)
Operating Temperature Range-10 Deg. to 40 Deg. C (14 Deg. to 104 Deg. F)
Battery Life300 minutes

microSD card

Supported microSD cardsMax 256 GBUHS-I Speed Grade 3
Recommended microSD cardsSanDisk High Endurance U3 V30 64GB microSDXC
SanDisk Extreme PRO U3 V30 A2 64GB microSDXC
SanDisk Extreme U3 V30 A2 64GB microSDXC
SanDisk Extreme U3 V30 A2 128GB microSDXC
SanDisk Extreme U3 V30 A2 256GB microSDXC
Lexar 667x V30 128GB microSDXC
Lexar High Endurance 128GB U3 V30 microSDXC
Samsung EVO U3 (Yellow) 64GB microSDXC
Samsung EVO Plus U3 (Red) 64GB microSDXC
Samsung EVO Plus U3 256GB microSDXC
Netac 256GB U3 A1 microSDXC

Footnotes:

Footnotes1. Due to local policy and regulation restrictions, the 5.8 GHz frequency band is currently banned in certain countries, including but not limited to Japan, Russia, Israel, Ukraine, and Kazakhstan. Please use the 2.4 GHz frequency band when operating in these locations. Always check local rules and regulations before use, as they may change over time.

2. Maximum flight range specification is a proxy for radio link strength and resilience, not aircraft battery capability. It only refers to the maximum, one-way flight distance. Data was measured in an open environment without interference. Please pay attention to the return prompt on the DJI Fly app during actual flight. Refer to the following applicable standard in different countries and regions:
FCC: United States, Australia, Canada, Hong Kong, Taiwan, Chile, Colombia, Puerto Rico, and other regions;
SRRC: Mainland China;
CE: UK, Russia, France, Germany, Portugal, Spain, Switzerland, Macau, New Zealand, UAE, and other regions;
MIC: Japan.

Data source: https://www.dji.com/dji-fpv/specs

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Source data acquired 2023-01-23 19:03:42